Solid phase
Official name
Cerium(IV) oxide
Secondary names
Ceric oxide; Ceria; Cerium dioxide
CAS number
1306-38-3
Type
Family
ionic solid
Class
alkali salt
Compound type
oxide
Chemical composition
Formula
$Ce^{4+}O^{2-}_2$
Chemical formula
CeO2
Elemental formula
(Ce4+) (O2-)2
Isotope mixture type
terrestrial abundance
6.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Ce^{4+}$ Cerium cation element 1 0.3333333333333333 1 constituent cation main
$O^{2-}$ Oxide anion element 2 0.6666666666666666 1 constituent anion main
Composition comments
partly ionic bond network but with double covalent bonds: smile: [O-2]=[Ce+4]=[O-2] (?)
Chemical bonds
  Bond Number
$ \cdot (\cdot) (\cdot) Ce^{4+} \cdot O^{2-} \cdot$ 8
Class
alkali salts (06)
Type
simple alkali salts (06.01)
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
hexoctahedral
Crystal class symbol
m-3m (Oh)
Crystal spacegroup
Fm-3m
Molar mass
172.115 $g/mol$
Density
7.215 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid CeO2 2400 °C (2670 K)
Refringence type
isotropic
Pure color
white
Color
white, yellow
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